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Q: Select the number from among the given options that can replace the question mark (?) in the following series. 2, 4, 5, 19, 71, ?
  • A. 361
  • B. 216
  • C. 261
  • D. 316
Correct Answer: Option A - The given series is as follows- 2, 4, 5, 19, 71, ? 2×1 = 2 + 2 = 4 4×2 = 8 – 3 = 5 5×3 = 15 + 4 = 19 19×4 = 76 – 5 =71 71×5 = 355+6 = 361 Hence, 361 will come in place of question mark.
A. The given series is as follows- 2, 4, 5, 19, 71, ? 2×1 = 2 + 2 = 4 4×2 = 8 – 3 = 5 5×3 = 15 + 4 = 19 19×4 = 76 – 5 =71 71×5 = 355+6 = 361 Hence, 361 will come in place of question mark.

Explanations:

The given series is as follows- 2, 4, 5, 19, 71, ? 2×1 = 2 + 2 = 4 4×2 = 8 – 3 = 5 5×3 = 15 + 4 = 19 19×4 = 76 – 5 =71 71×5 = 355+6 = 361 Hence, 361 will come in place of question mark.